Improvement in machines for making and setting blind-staples



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JEREMIAH KEITH, OF C/HARLTONQMVAS Letters Patent No. 112,719, datedMarch 14,

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IMPROVEMENT IN MACHINES FOR MAKING AND SETTING BLIND-STAPLES.

- l The Schedule referred to in these Letters Patent and making part ofthe same.

Taal! whom it may concern:

Bc it known that I, Ji-:nEMLtH KEITH, of Charlv ton, in the county of'orcester and State ot' Massachusetts, have invented an Improved Machinefor Making and Setting Blind-Staples; and I do hereby declare that thefollowing, taken in connection with the drawing which accompanies andforms part of this specification, is a description of my inventionsutticient vto enable those skilled in the art to practice it. l

My invention relates to a new construction or organization of machinesfor forming blind-staples and driving them into blind-slats andthe'blind-slat rods, the invention consisting in the various details ofarrangement and method of operation of the mechanism.

The drawing represents a machine embodying the invention..

A shows the mechanism in front elevation.

'B is an end view ofit.

C, a rear elevation.

a denotes the bed or frame, which, in connection with an upright, l1,supports the mechanism.

c is a verticaily-adjustable table, upon which the l Slat or rod tobe"stapled is placed, the lower edge resting on this table, ami theupper edge extending under a shoulder, d, 4the back of the slat beingsupported against a vertical face, c.

The top ofthe shoulder d, and another shonlder,j, form ways, in whichtravels a reciprocating slide, f, on the front, and near the oppositeends of which are two plates g 71, in each of whichl is a horizontalhole for passage of the staple-forming wire i, said wire entering themachine through a. stationary eye-piece It, and passing under aspring-stop, I, which permits the wire to be drawn forward, but preventsits slipping back.

The wire passes under a spring-feeder, m, on thc slide f, and as theslide moves forward this feeder isv cramped down upon the wire and drawsit forward with it, the projected end ofthe wire extending through aguide-eye, n, over a ledge or bed, o, through a guideeye, p, and over abeak or anvil, q, the guide-eyes being formed in a plate, 1', fastenedupon the front of the upright` b. The inner face of the plate r, at itsfront end, is incliued,aud the guide-erop leads out to such face.

Over the face is a cutting-edge, s, on the bottom of avertically-sliding bender-plate, t, the cutting-edge being the converseof the inner face of the plate r,

and so that, as itdesceuds, it strikes the wire at the end of the eye pandclips it 0d', cutting it on an angle, and thereby pointing it.

Before or just as the cutter reaches the wire, (in the descent of thebender t,) the bottom of the plate strikes the wire over the top ofthebeak q.

The bottom of the plate has a vertical slot, u, of a width exceeding thethickness of the former, and as the plate moves down it bends theopposite end of the wire over the beak q and down against its sides, andthereby forms the wire into a staple, the end of the wire projectingbeyond the beak being ofthe length to form one ot the staple-legs, andthe length ot' wire from the beak to the mouth ofthe eyepbeing the same,and forming the other leg.

'hen the staple is thus formed it-s two points are just above the edgeof the slat to be stapled, and the bottom ofthe bender-plate descendsagainst the slat and holds it.

The vertical movement of the bender is effected by a lever, r, one arrnof which extends into a, slot, w, in the bcuder-plate, and this lever isactuated byauother lever, ce, a piu, y, from one arm of which extendsinto a bent slot, s, in the lever lv.

After the lever-arm a2 has eicoted vthe movement of the bender-platedown upon the Slat the arm still further descends, but without impartingmovement to the bender, and strikes the head ofa driver, b2.

The bottom ofthe driver is in line with the formed staple and over thebeak, and just before the lever drives down the staple, an incline, ci,at the lower end of a lever, (Z2, is forced in between an arm` e,

-from the end of which projects the beak q, and the upright b, andpresses said beak back from under the staple out of the path of movementof the driver, the upper' arm of the lever di havinga cam-slot, f2, intowhich projects the pin y, the pin striking one incline of the Yslot asit moves down, and thereby causing the lower end of the lever to forceback the beak.

When the piu rises it strikes another incline ofthe slot and throws upthe lower end of the lever', freeing the beak-arm, which is then pressedforward again by a suitable spring. v

The beak having been thrown back, the driver descends upon the stapleand forces it into the slot.

When the next staple is formed by the descent of the bender, the drivergives way as the bender de scends.

The carrier or slide f is moved forward by the lower 'arm g2 of thelever I, the forward movement of this arm causing it to strike the plateh and more the slide, and withI it the wire, this movement taking placejust after the same movement of'the levcr x has effected the rise of thecutter, bender, and driver, and the forward movement of the beak leavingthese parts in position to receive the advancing end of the Wlle.

When the wire is being cui; and formed by the descent of the upper armof lever x, the arm g2 moves back, striking the plate g, and returns thecarrierslide to its normal position, the stop an. yielding and allowingthe plates g h to slip upon the wire, the stop lholding the wirestationary during the back'movement ot'tbe carrier-plate. VFixedto thelever-arm s is a. cutter-stock 7L, having at its bottom end two cuttersi, and just as the arm is completing its descent these cutters strikethe opposite sides of the wire. cutting'npon euch side a nick. k, :1sseen at D, the wire'being subsequently cut off between the two nicks, sothat a-nick is formed upon one end of one staple and one end of anotherby each action of the cutters.

The metal displaced in cutting euch nick forms a barb, which helps toconfine the staple to the Slat.

When the Slat-rod is to have the staples applied t0 it, tbc table cisraised and fastened in position, to enable the slut-rod to be properlysupported und presented to the action of the stnple-driving` mech anism.l

To feed the rod, n rocker-arm, l2, may be connected by a. link, m2, tothe lever-arm g, and a projection, n,upon this arm, in its forwardmovement, strikes one of a'scries ot' teeth ou a strip or rae-k fastenedto tbe rod.

"Vhen the slats are being stapled the link is unjointed from the lever,:ind the rocker-arm may then act as a presser to keep the sint up to theface e, for

2. In combination with the mechanism for cutting,

forming, and driving,r the wire-staples, the cutters i', for nieking;`the wire, substantially :ts shown und described.

3. In conibinaton with the bender und driver, the benk q, nmde toretreat after the wire is bent and hel'ore the driver deseen-ls,substantially ns described.

4. 1n combination with the feeding, cutting, heiniing, and drivingmechanism, the :lrni l" and link m2,

for efecting the feed movcmenblof the shrewd, substantially nsdescribed.

Witnesses:

E. C. THAYER,

Seru L. CARL-ESTER.

JEREMIAH KEITH.

